Lamp



FIG. 1 is a front right perspective view of a lamp in accordance with our new design;

FIG. 2 is a front elevational view thereof, a rear elevational view thereof being a mirror image;

FIG. 3 is a left-side elevational view thereof, a right-side elevational view thereof being a mirror image;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a lamp, as shown and described. 